Results/Conclusions Calcium concentration was greater in leaves at limed than unlimed plots during the two years following liming. Among the three most common tree species – red maple, yellow birch, and American beech – yellow birch demonstrated the strongest increase in calcium concentration in leaves following liming. Millipedes were the most common large detritivores at our plots and demonstrated greater whole-body calcium concentration, but not greater abundance, at limed plots. Snails were markedly more abundant at limed than unlimed plots. This was expected given that snails have high calcium needs and have demonstrated increased abundance at other limed forests. Both of the two earthworm species that we found at our plots are known acidophiles and did not apparently respond to liming. We detected a decrease in abundance of shrews, which are mammalian insectivores and represent high-order predators in this system, at limed plots. Changes in abundance of certain foods or physical changes at the forest floor may have negatively affected shrew survival or reproduction. Overall, we found that liming mitigation can be used to amend calcium in forest food webs affected by acidic deposition. However, effects of liming might be complicated by the acidophilic nature of communities at Adirondack and other acid-impacted forests.